EEG/ERP Lab

The LIBC has several electrophysiological (EEG) laboratories at its disposal.

The EEG labs are equipped with Biosemi amplifiers, featuring local amplification of physiological signals over the source, and an unfiltered throughput of physiological signals for 24-bit digitization at a maximum of 2048 samples/sec. There is one setup for 74 channel, one for 136 channel, and two for 40 channel recordings. This involves the use of an electrocap for 32, 64 or 128 positions, and 8-10 separate electrodes. Each setup is located in a test room, in which subjects are seated in an adjustable chair. Two 4-button response boxes per setup are mounted at the end of each armrest. Alternatively, responses can be sampled through a microphone (both audio recording and discrete voice-key recording), two pedals or other discrete response devices. Combinations between EEG and Tobii eye tracker recording are possible. Per setup, there is a PC for recording time series, and a PC for stimulus presentation. The stimulus presentation PC controls two identical 19" 100 Hz CRT monitors or LCD monitors. Auditory stimulus presentation is possible with a stereo air pulse headphone system or mini speakers. Stimulus presentation is controlled using E-prime. Stimulus presentation time and responses are recorded along with EEG. Monitoring data acquisition is done with LabView data acquisition software. Off-line analysis of EEG takes place using Brain Vision Analyzer or BESA software.